in a word .,,"no" however they are the basis of the entire "Class 15" machine so while the bobbin is not the same as the 66 and 99 it is the single most popular class bobbin out there.... basically there are class 66 and there are class 15 bobbins ( at least for old singer standards ) face plates are unique as they have the tension adjustment ON the face plate but then again almost all the other models have face plates unique to that model. needle plates should be no problem for a 15 either.